GraphDefang for SpamAssassin

[Rob Kudyba]

I saw GraphDefang mentioned here the other day and thought I'd give it a 
shot...sorry if this is the wrong place to ask but would anyone have an 
idea why the PNG images are displaying as broken? The graphdefang.pl is 
updating perfectly, i.e., w/out errors, but all of the PNG files always 
output as 0 KB files, e.g.:
0 Dec  7 16:55 daily_all_summary_line.png

Check it out here: http://herbie.raeinternet.com:8000/index.php
Thanks...
Rob
Admin for http://www.raeantivirus.com/ & http://www.raeinternet.com/